Proceedings of Online nanoGe Fall Meeting 20 (OnlineNFM20)
Publication date: 4th October 2020
Metal halide perovskite single crystals are being explored as functional materials for a variety of optoelectronic
applications but a general uncertainty exists about the relevant mechanisms governing the electronic operation The
presence of mobile ions and how these defect species alter the internal electrical field, interact with the contact
materials or modulate electronic properties is highlighted Here a set of high quality thick MAPbBr 3 single
crystals contacted with low reactivity chromium electrodes are analyzed by impedance spectroscopy The
examination of the sample resistance evolution with bias and releasing time, reveal an interplay between the
perovskite electronic conductivity and the defect distribution within the crystal bulk
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